Tex. Election Code § 203.005: APPLICATION REQUIRED.

(a) To be entitled to a place on a special election ballot, a candidate must make an application for a place on the ballot.

(b) An application must, in addition to complying with Section 141.031:

(1) state the political party with which the candidate is aligned or, if the candidate is not aligned with a party, state that fact; and

(2) be accompanied by:

(A) a filing fee in the amount prescribed by Section 172.024 for a candidate for nomination for the same office in a general primary election; or

(B) a petition that satisfies the requirements prescribed by Section 141.062.

Acts 1985, 69th Leg., ch. 211, Sec. 1, eff. Jan. 1, 1986.